.app {
	display: flex;
	flex-flow: row;
	border: 1px solid red;
	.nav {
		width: 200px;
		padding: 10px;
		margin: 10px;
		border: 1px solid blue;
	}
	.content {
		flex: 1;
		padding: 10px;
		margin: 10px;
		border: 1px solid black;
	}
}
.nav-link {
	color: blue;
	text-decoration: underline;
}
.selected {
	color: red;
}
